This disorder is awful because many times I questioned if it is all in my head. I sympathize with anyone going through it. Fortunately, I would say I am 95% recovered now. Here is what I learned:
Cause: It began my sophomore year in college after I strained my hamstring tendon. My refusal to rest and let the tendon heal caused muscles to compensate. I had many diagnosis including a plica, labral tear, and leg length difference. In the end, the likely culprit is a combination of my partially torn hamstring tendon and months of compensating.
Symptoms: The loss of coordination typically happened after 1-2 miles of running tempo pace. It would not go during easy running or sprinting. There was a 100% chance I would begin loosing coordination in an 8K or 10K. There was little pain, but it would begin with numbness in the outside of my left knee and eventually travel down so that it looked like I was dragging my left foot along the ground. I felt neurological because it was almost as if the muscles were firing without my brain's permission. As someone who was trying to run 5:20 pace in a XC 10K, I would slow down to 5:50-6:15 pace when the coordination issues began.
Figuring out what was going on: Fortunately, I was an 800/1500 runner. The leg prevented me from working on my long runs or running tempos, but interval work was typically fine. I finished my college career and moved to the Rockies. I still wanted to run competitively. I trained for halfs and fulls with the coordination issue still present. Eventually, I gave up and began running trails.
Healing: What worked for me may not work for everyone. As I started to learn how to trail run, I noticed that hard efforts did not cause lack of coordination like on the roads. The repetitive motion of road running triggers something in my leg that causes the loss of coordination. The non-repetitive strides in trail running never triggered the "something." Here is what helped me heal-
- Trail running - do something that requires you to run in a way that you are not used to. If you don't have rocky trails or just hate trail running, try mixing up sprinting and walking, or do some hill sprints. Anything to break your brain/neuro system from the bad habit of losing coordination.
- Lift. I never lifted. I now do squats, calf raises, box jumps, lunges and other activities that force me to do athletic motions with my legs that are not running.
-Stop running when you loose coordination. I began bailing on workouts if my leg issue flaired up. Do not let your body get in the habit of loosing coordination. This was the hardest part because I hate bailing on races or workouts.
All this information is just to help those struggling with this issue. My experiences may be different than yours. Every cause is likely not the same. Kara might have a totally unrelated issue to mine. I just hope that those struggling with this issue know that it is not in your head. Best of luck to all.